<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'calculator.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
  
  ${calculator.num1 }${calculator.operator }${calculator.num2 }=${calculator.result }
  <hr/>
    <form action="<%=request.getContextPath()%>/servlet/CalServlet">
    	 第一个参数：<input type="text" name="num1"><br/>
    	 运算符：<select name="operator">
    	 		<option value="+">+</option>
    	 		<option value="-">-</option>
    	 		<option value="*">*</option>
    	 		<option value="/">/</option>
    	 		</select><br>
    	第二个参数：<input type="text" name="num2"><br/>
    	<input type="submit" value="计算">
    </form>
  </body>
</html>
